RADIOCESIUM IN HOT PARTICLES - SOLUBILITY VS CHEMICAL SPECIATION

Citation
Ah. Alrayyes et al., RADIOCESIUM IN HOT PARTICLES - SOLUBILITY VS CHEMICAL SPECIATION, Journal of environmental radioactivity, 21(2), 1993, pp. 143-151
Citations number
NO
Categorie Soggetti
Environmental Sciences
ISSN journal
0265931X
Volume
21
Issue
2
Year of publication
1993
Pages
143 - 151
Database
ISI
SICI code
0265-931X(1993)21:2<143:RIHP-S>2.0.ZU;2-F
Abstract
In the case of a severe nuclear reactor accident, UO2 particles may be emitted as a consequence of mechanical disintegration of the fuel. On ce in the atmosphere, various physico-chemical reactions may then occu r between the partially vitrified dioxide and vapours from the reactor ; these reactions are able to incorporate fission products into the UO 2 particles and reduce their availability to the environment. Caesium, for example, which is usually very soluble, can react with fuel UO2 an d iron from the reactor structures and be included in chemical forms s uch as uranates or ferrites where its solubility is greatly reduced.